How To Fix CL063 - Error locking & &; internal error

SAP Error Message - Details

• Message type: E = Error

• Message class: CL - Classification

• Message number: 063

• Message text: Error locking & &; internal error

What causes this issue?

An internal error occurred locking &v1&.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Please contact your system administrator.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CL063 - Error locking & &; internal error ?

  The SAP error message CL063, which indicates "Error locking & &; internal error," typically arises in the context of object locking mechanisms within the SAP system. This error can occur when there is an issue with the locking of objects, which is essential for maintaining data integrity during concurrent access.
  Causes:
  
  Lock Table Overflow: The lock table may be full, preventing new locks from being created.
  Database Issues: There may be underlying database issues that are causing the locking mechanism to fail.
  System Performance: High system load or performance issues can lead to timeouts or failures in acquiring locks.
  
  Configuration Issues: Incorrect configuration settings related to locking mechanisms in the SAP system.
  Deadlocks: Situations where two or more processes are waiting for each other to release locks, leading to a deadlock scenario.
  
  Solutions:
  
  Check Lock Table: Use transaction code SM12 to check the lock entries. If the lock table is full, you may need to delete unnecessary locks